Dual Spiral Aggregate Washing Machine
Two-spiral high throughput · Compact footprint · Balanced recovery and capacity
Dual spiral washer · two independent spirals in a shared trough
Core specifications
Spiral diameter500 – 1000 mm (each)
Capacity40 – 350 t/h
Motor power2 × 5.5 – 2 × 22 kW
FootprintCompact shared-trough design
RedundancyIndependently operable spiral channels
Dual Spiral Aggregate Washing Machine – Overview
The SMC dual spiral aggregate washing machine combines two parallel spiral units within a shared trough structure, doubling the washing throughput achievable from a single-spiral design while occupying a footprint considerably smaller than installing two separate single-spiral machines side by side.
Each spiral operates independently within its own channel of the shared trough, meaning either spiral can be shut down for maintenance while the other continues operating, providing a degree of operational redundancy that a single large spiral cannot offer — valuable for plants where washing downtime directly limits overall production.
The shared trough and drive arrangement reduces the structural steel, foundation area, and drive component count compared to two fully separate machines, lowering both capital cost and the plant footprint required to achieve a given washing capacity, which is particularly valuable at sites with constrained available space.
Both spirals can be configured with independent speed control, allowing operators to run each channel at a rate matched to its specific feed characteristics if the plant splits different material streams between the two spirals, or to run both in tandem at matched speed when processing a single homogeneous feed stream.
The gentle, gravity-assisted washing action characteristic of spiral technology is preserved in the dual configuration, maintaining the same fine-sand recovery advantage over more aggressive washing methods while achieving the higher throughput that a single spiral of practical size could not deliver on its own.
Wear components — spiral blade linings, bearing seals, and trough wear plates — follow the same design specifications as SMC's single-spiral washers, ensuring familiar maintenance procedures and shared spare parts compatibility for plants that operate both single and dual spiral units.
Typical applications include medium to large aggregate production plants needing higher washing throughput than a single spiral provides, sites with limited installation footprint where two separate machines would not fit, and operations valuing the redundancy of independently operable spiral channels.
For plants needing higher washing capacity without a proportional increase in footprint, the SMC dual spiral aggregate washing machine delivers doubled throughput and operational redundancy in a single compact installation.
Sanming Mining - Raising Industry Standards
Company Profile
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Sanming is an international Mining Machinery Equipment Supplier that integrates R&D, Manufacturing, and Sales of Rock Crushing&Screening equipment, as well as Sand Making, Sand Washing, and Grinding equipment. Sanming has passed ISO9001 quality system certification.
As
China Dual Spiral Aggregate Washing Machine Manufacturers and
Wholesale Dual Spiral Aggregate Washing Machine Factory, our equipments are widely used in the fields of Sand and Gravel Aggregate processing, Mining, and Construction Waste Resource utilization.
"Sanming" brand equipments are not only distributed in nearly 30 provinces in China, but also exported in large quantities to multiple countries in Central Asia, the Middle East, South America and Africa, and has received unanimous praise from users. Our main production base is located in Qidong (Shanghai Pudong New Area Industrial Park). We warmly welcome your visit to our factory.
- 200+
Number Of Products
- 20,000
Factory Area
- 500w
Annual Sales
- 40%
Annual Export Ratio
How It Works – Working Principle
Split Feed Intake
Material can be distributed across two independent spiral channels.
Parallel Spiral Lifting
Each spiral lifts and dewaters sand within its own trough channel.
Independent Speed Control
Each spiral can run at a rate matched to its specific feed stream.
Redundant Operation
One spiral can continue running while the other is serviced.
Applications & Industries
Medium-to-Large Aggregate Plants
Achieving higher washing throughput than a single spiral allows.
Space-Constrained Sites
Doubling capacity without the footprint of two separate machines.
High-Uptime Operations
Sites valuing the redundancy of independently operable channels.
Mixed Feed Stream Plants
Processing two different material streams at matched independent rates.
Suitable For Various Mining Applications
Equipment Production Line
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Selection Guide – Choose the Right Model
DS-500
Feed: 500mm ×2 · Capacity: 40–90 t/h
Compact dual-spiral unit for smaller aggregate operations.
DS-700
Feed: 700mm ×2 · Capacity: 80–170 t/h
Balanced model for standard medium-scale washing needs.
DS-850
Feed: 850mm ×2 · Capacity: 150–260 t/h
Higher-capacity option for larger aggregate production plants.
DS-1000
Feed: 1000mm ×2 · Capacity: 220–350 t/h
Top-capacity model for major washing throughput requirements.
Comparison – Dual Spiral vs Two Separate Single-Spiral Units
Key Performance Indicators
Footprint efficiency · Redundancy/serviceability · Capital cost efficiency (relative)
Dual Spiral Advantage
- Significantly smaller footprint for equivalent capacity
- Lower capital cost than two separate machines
- Shared structure simplifies installation
Two Separate Single-Spiral Units
- Fully independent structures for maximum redundancy
- Can be installed at different plant locations
- Simpler individual unit replacement
Key Components – Built to Last
Dual Spiral Shafts
Two independently driven spirals within a shared trough structure.
Shared Trough Structure
Reduces steel and foundation requirements compared to separate machines.
Independent Drive Motors
Separate motors allowing independent speed control per spiral.
Wear-Resistant Blade Lining
Same specification as SMC's single-spiral washers for parts commonality.
Dual Overflow Weirs
Separate contaminant overflow for each spiral channel.
Shared Discharge Chute
Combines dewatered sand output from both spirals for stockpiling.
Installation & Commissioning
Foundation
Compact foundation supporting the shared trough and dual drive systems.
Dual Water Supply
Connect water supply to both spiral channels, independently valved.
Independent Speed Setup
Configure each spiral's drive speed per its intended feed characteristics.
Commissioning
Stagger start-up of each spiral to verify independent operation before full load.
Maintenance Schedule & Wear Trend
Wear/Component Life Over Time (Relative)
Service one spiral at a time to maintain partial washing capacity during routine maintenance.
Daily Checks
- Both spirals' rotation and lifting action
- Water level at each overflow weir
- Discharge sand cleanliness
Weekly Checks
- Inspect blade lining wear on both spirals
- Check bearing seals for leakage
- Clean trough sediment
Monthly
- Grease both spiral shaft bearings
- Inspect independent drive systems
- Check trough structural condition
Yearly
- Full bearing inspection on both spirals
- Inspect shared trough for wear/corrosion
- Complete dual drive system service
Quality You Can Trust
Why choose Sanming
Sanming is a professional manufacturer of R&D, manufacturing and sales
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01. Design & Customization
The company has an experienced and highly skilled R&D team, which is capable of providing customers with customized equipment solutions to meet the needs of different customers
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02. Advanced Facilities
The company has invested in and introduced a series of advanced production equipment, such as high-precision CNC machine tools, automated welding equipment, etc. These equipment features high efficiency, precision and stability, which can ensure the quality of products and production efficiency
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03. Reliable Quality
The company always gives top priority to product quality. It uses high-quality raw materials and components, and through strict screening and inspection, it ensures the quality and performance of products. At the same time, the company also conducts long-term tracking and services for products, promptly solves the problems encountered by customers during the use process, and improves customer satisfaction
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04. Service Integrity
The company has established a complete after-sales service system to provide customers with comprehensive services. This includes equipment installation and debugging, operation training, maintenance, technical consultation, etc., to ensure that customers can use the equipment smoothly and maximize its benefits
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05. Cost Control
The company effectively controls product costs by optimizing the production process, reducing raw material procurement costs, and improving production efficiency. On the premise of ensuring product quality, it can provide customers with competitive prices and enhance their market competitiveness
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06. Brand Influence
After years of development, the company has established a good brand image in the mining equipment manufacturing industry and has won the trust and praise of customers
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07. Convenient Transportation
The company is only 50 kilometers away from Shanghai Yangshan Port, making the transportation of goods and exports very convenient
Frequently Asked Questions (FAQ)
1. What is the main advantage of a dual spiral design?
It doubles washing throughput compared to a single spiral while occupying a footprint considerably smaller than two separate machines, and offers redundancy since either spiral can operate independently.
2. Can one spiral be serviced while the other keeps running?
Yes, each spiral operates independently within its own trough channel, so one can be shut down for maintenance while the other continues washing, maintaining partial capacity.
3. Can the two spirals run at different speeds?
Yes, each spiral has independent speed control, allowing them to be matched to different feed characteristics if the plant splits material streams, or run in tandem for a single feed.
4. How does the footprint compare to two separate single-spiral machines?
The shared trough and structure significantly reduce the footprint compared to installing two fully separate single-spiral washers side by side.
5. Is fine sand recovery affected by the dual configuration?
No, each spiral preserves the same gentle, gravity-assisted washing action as a standard single-spiral unit, maintaining the same fine-sand recovery advantage.
6. What capacity range does this equipment cover?
Capacity ranges from 40 to 350 t/h depending on spiral diameter, suitable for medium to large aggregate production plants.
7. Are wear parts shared with single-spiral models?
Yes, spiral blade linings and other wear components follow the same design specifications as SMC's single-spiral washers, simplifying spare parts management.
8. What water supply configuration is needed?
Each spiral channel is typically independently valved, allowing water flow to be adjusted separately for each spiral based on its feed and washing requirements.
9. How does capital cost compare to two separate machines?
The shared trough, structure, and reduced installation footprint generally result in lower capital cost than purchasing and installing two fully separate single-spiral washers.
10. What maintenance access is provided for each spiral?
Each spiral channel can typically be accessed and serviced independently without disturbing the operation of the adjacent spiral.
11. Is this equipment suitable for split feed streams?
Yes, plants processing two different material streams can direct each stream to its own spiral channel, running each at an independently optimized speed.
12. What warranty is offered?
A standard 12-month warranty covers manufacturing defects, with wear components covered separately as consumable items.
After-Sales Support & Services
Capacity Planning Support
Guidance sizing dual spiral capacity against your throughput requirements.
Shared Wear Part Supply
Blade linings and wear plates stocked, compatible with single-spiral models too.
Redundancy Planning Assistance
Support scheduling maintenance to maximize uptime using independent channels.
24/7 Technical Support
Ongoing assistance for dual spiral aggregate washing operations.
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